Oscillating engine



Nrrnn STATES.

ATENT Orricn.

OSCILLATING ENGINE.

SPECIFICATION forming part of Letters Patent No. 558,095, dated April 14, 1896.

Application filed April 21, 1892.

To all whom it may concern:

Be it known that I, CHARLES H. MCCREADY, a citizen of the United States,residing at WVest Bridgewater, in the county of Beaver and State of Pennsylvania, have invented certain new and useful Improvements in Oscillating Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as. will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention pertains to an improved oscillating engine; and it consists in the detail construction and combination of parts, substantially as hereinafter more fully disclosed, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view, principally in plan, of my invention. with a portion thereof in section. Fig. 2 is an enlarged detailed view of the same, showingv more fully the valve. Fig. 3 is a section taken on the line 90 at of Fig. 1, and Fig. 4 is a detached view of one of the engines.

In the embodiment of my invention I construct a steam-chest 12 of three parts or plates 1 2 2, held or bolted firmly together side by side, pivoting to the outer sides thereof the engines or cylinders 3, with their pistons suitably connected to and actuating a crankshaft. (Not shown.) The center plate 1 has near one end a rectangular opening 12, and within this opening is arranged the valve 8, having a stem 9. The valve 8 is skeleton or frame like in construction, its general outline or contour being rectangular, with central curved enlargements, the purpose of which will appear farther on. Each of the plates 2 2 has in it, opposite the opening 12 in the central plate 1, four small openings 5 6, serv ing alternately as steam supply and exhaust ports, and centrally of these ports are exhaust-ports 7, one in each plate 2 and extending upward and outward through the same,

a as 7 these ports intersecting the bearings of the pivots of the engines or cylinders 3 as an advantageous arrangement thereof.

The cylinders or engines 3 are each provided in the side next to the plates 2 2 with four steam passages or ports 13, two near each s um No. 430,138. (No model.)

end, adapted as the cylinders or engines are oscillated, as they do in operation, to alternately register or coincide with the ports 56 in the plates 2 2, communicating with the valve-chamber 12". Steam is supplied to the valve-chamber continuously through the pipe 11, connected to one end of the plate or part 1, in alinement with a passage communicating therewith, and to a suitable source of steam supply.

It will be observed that the valve 8 is adapted to compass at each stroke or movement a port of each series 5 6 and the central exhaust-port 7 7 as will be readily seen from the foregoing, thus providing for a continuous and a single exhaust for both series of the ports 5 6 of each engine or cylinder.

In operation the cylinders or engines, when receiving steam, are inclined at opposite angles, and the steam enters through the ports uncovered by the valve 8 and the exhaust escapes from the cylinders or engines through the ports inclosed by the valve and passes out through the exhaust-port 7 7. The oscillation of the cylinders or engines and the movement of the valve change the direction of the passage of the steam entering said cylinders.

I claim and desire to secure by Letters Patent- 1. The combination, with the steam-chest of the oscillating engine having two cylinders and two series of ports in each side of said steam-chest,communicating with correspond ing ports at opposite ends of the cylinders, of the vertically-movable valve of skeleton or frame like construction with its opening spanning two opposite ports and at all times inclosing the exhaust-port, substantially as set forth.

2. The eombinatiomin an oscillating engine, of the steam-chest consisting of the central and side plates, said central plate having a chamber therein, and said side plates having, each, two series of ports and intermediate of said ports an exhaust-port, the oscillating cylinders having series of ports corresponding and registering with the aforesaid series of ports, and with their pivots or trunnions bearing in said intermediate exhaustports, and the vertically-movable valve arranged in the chamber of said central plate and of skeleton or frame like construction, With central enlargements, to provide for the encompassing of opposite ports of the afore said series of ports of said side plates and the intermediate exhaust-ports of said plates, substantially as set forth.

In testimony that I claim the foregoing l hereunto aifiX my signature this 4th day of February, A. D. 1892.

CHARLES H. MCCREADY. [It 3.]

In presence of- CHARLES LARGE, M. E. HARRISON. 

